Success on my first troubleshoot. It was the converter. Fuzes were OK, but the white wire was not firmly seated in its slot AND (drum roll please...) the converter was not plugged in! So I tightened the wiring and plugged it in. As soon as Debra flipped the 50amp circuit breaker back on, the basement light got MUCH brighter. The charge indicator is now showing green also. I feel so much better. Love the RV still. It is awesome.